Mining apparatus



July 9, 1935. c. F, osGooD M1NING-APPARATUS Filed March 1, 1950 6Sheets-Sheet l c. F, osGooD Ew@ MINING APPARATUS Filed March l, 1930 6sheets-sheet 2 .nuly 99 1935..

w E Q rv A M \%&N u mwN NNN @QN am @N EN SN@ m L .DI M 1/ A 1 A @E A NFiled March 1, 1930 6 sheets-sheet 5 July 9, 1935. C, F QSGOQD 2,007,900

MINING APPARATUS Filed March l, 1950 6 Sheets-Sheet 4 @9M IMM/whmy193,5. c. FosGooD ZU'LQUU MINING APPARATUS Filed March l, 1930 6Sheets-Sheet 5 IOZ Gini..

July 1935. c. F. osGooD A 2,007,9

MINING APPARATUS Filed Maron 1', 195o e sheetssheet e` F 7W 777W f4 6165555 5 i737 56v 95 70 o I |7 Patented `luly 9, 1935 l Y MINING APPAA'IUS Y Charles F. Osgood, Claremont, N121., assignor to SullivanMachinery Company,`a""corporation of `Massachusetts Application March 1,1930, Serial No. 432,541`

19 claims. (c1. 262428) This invention relates to mining apparatus andis to providefan' improved coal mining apparatus more particularly hasreference to improvements of the wheelmounted track supported and guidedin coal mining apparatus oi the Wheel mounted type havingimproved motordriven devices for universal type adapted to operatewhile sup'- swingingthe kerf cutting mechanism relativeto ported and guided by a minetrackway. the truck, for adjusting the cuttingmechanism `5' l An objectof thisinvention is to providean iminto different elevated positionsrelative Yto the proved coal mining apparatus. Another object truck andfor` tilting the cutting mechanism, for is to provide an improved coalmining apparatus rotating the cutter head, for adjusting the cutof thewheel mounteduniversaltype havingimting device bodily toward and fromthe head axis, 101 proved adjustable kerl" cutting mechanism opandfforswinging the cutting device about its 10 erative to cut kerfs inparallel planes either horipivot. These and other objects of thisinvention zontally or vertically. Another object is to prowill, however,hereinafter more fully appear in vide an improved coal mining apparatusof the the course of the following description and as Wheel mounted typeadapted to operate while supmore particularly pointed out in theappended ported and guided bya mine trackway and havclaims. Y i Y p ingimproved adjustable kerf cutting mechanism Infthe accompanying drawingsthere is shown whereby a keri maybe cut at or near the level forpurposes of illustration one form which the of the mine bottom outsideand below the level invention may assume in practice. Y ofthe minetrackway. Still another object is to In these drawings,- i Y 2Q. providein a mining apparatus 'of the aforesaid Fig. lis a plan view of theillustrative embodi 20- character improved adjustable kerf cuttingmechment` of Y the improved mining apparatus.

anism whereby the cutter bar may be positioned Fig. 2is a sideelevational view of the mining to cut a horizontal keri ator` near thelevelof apparatus shownrin Fig. 1 j y the mine bottom outside the minetrackwayor to Fig. 3 is. an enlarged fragmentary plan view of cut avertical kerf. Yet another object is tol the apparatus shown in Fig.` 1with parts` shown 25- provide in a mining apparatus of the aforesaid inhorizontalsection to illustrate structural decharacter improvedadjustable kerf cutting mech" tailsl 1 j anism whereby the cutter barVmay be positioned Fig. fi` is a central longitudinally extending to cuta horizontal kerf at or near the levelv ofvertical sectional view takensubstantially online the mine bottom or at or near the level of the 4-4`of Fig. 3. 30

mine roof, thereby enabling the apparatus fto i Fig."5 is Va centrallongitudinally extending operate either asamounted bottom cutter oratopverticalsectional View taken substantially on cutter to suit varyingmining conditions. Still lineA 5`5 of Fig. 1. `another Objectis toprovide an improved topv l Figiv Vis a transverse vertical sectionalView 35,y cutter mining apparatus Vwherein a plurality of takensubstantially on line lof Fig. 4.

adjusting mechanisms for the cutter mechanismA Fig. '7 is a detailsectional View taken substan` is provided for adjusting the cuttingdevice. rA tially on line T-l of Fig. 3. further object is to provide animprovedfmecha` d Fig. 8 is a horizontal section on a plane core' nismfor adjusting the cutting mechanism into responding to the 1in@ s of Fig5 40 different elevated and angular positions relative 'Fig 9 s atransverse Verf-,ical Sectional yView 40 to the truck and driven fromvthe same motor as that which drives the truck Wheels to propel theapparatus along the mme trackway Another. ing details ofthe mechanismshown in Fie. 9. @meet is t provdelan improved oal'mning ap'. Fig. l1isfa diagrammatic side elevational view SSOQ amdig illus-faim theniningapparatus in a mine with.

tramway having Supports extremely flexiblem thefcutltrtig devlceoperating atrthe level of the adjustment Vwhereby the cutting device maybe mmf? o Om .y positioned at or near the level of the mine bottom' Flg-12 1s a' dlagramma'tlc plan View Illustrattakeri substantially on line 99 of Fig. l. Fig. l0 is ahorizontal sectional view illustratoutside themine trackway, at or near the level of ing the apparatusV making anaTCWaH Cut all? 'Of 50L themine roof, or may be adjusted into positionsynew 1311619161 0f the mine bottomtnmake vertical or shear Cuts, it'alsobeingjpos# 13 isaI diagrammatic Side elevational VeW sible to tilt thecutting mechanismabout a trans-4 of the apparatus operating as a mountedtop` verse axis to vary the angle oi the cuttingdevice cutter;

" 55. relative to the horizontal. Yet another object Fig: 14 iS adiagrammatic Side elevational View 55- illustrating the apparatusoperating as a shear or vertical cutter.

In this illustrative embodiment of the invention there is shown a coalmining apparatus of the wheel mounted track supported and guided typegenerally comprising a self-propelled truck I mounted on wheels 2adapted to travel along a mine trackway 3. Mounted on the truck foradjustrnent vertically relative thereto is a horizontal turntable iwhich in turn has supported thereon for horizontal swinging movementtherewith relative to the truck, a frame 5. Supported on the forward endof the frame 5 for rotation about a longitudinal axis is a cutter headE3 having adjustably mounted thereon a cutter bar 1. Suitable motoroperated devices are provided for driving the truck wheels, foradjusting the turntable 4 relative to the truck, for swinging the frame5 relative to the truck, for rotating the cutter head 6 about its axis,and for adjusting the cutter bar 1 relative to the cutter head as willhereinafter be described:

Suitable mechanism is provided to propel the truck in either directionat a transporter at a cutting speed. Carried on the rear, end of thetruck frame is a motor I0 which may be of the reversible electric typehaving its armature shaft I I connected by a coupling I2 to alongitudinally extending shaft I3 (see Fig. 9). Fixed to the shaft I3 isa worin I4 meshing with a worm wheel i5 rotatably mounted on atransverse shaft I6 suitably journaled within a base frame I1 suitablysecured to the truck frame. This Worm wheel I5 may be operativelyconnected to the shaft I6 by means of a multiple disc clutch I8 of ausual design having suitable cam operating mechanism including avhandlever I9. Fixed to this transverse shaft i8 is a brake drum 20 which isengaged by a brake band 2I also arranged to be controlled by the handlever I9. When this hand lever is swung in one direction the clutch I8is applied and the brake 2l released and in the opposite direction thebrake is applied and the clutch released, although it is obvious that lseparate operating means may be employed for the clutch and brake ifdesired. Journaled on the shaft I is a spur gear 22 connectible with theshaft by a jaw clutch 23 splined to the shaft and this gear meshes witha spur gear 24. The spur gear 24 is connected to a transverse shaft 25suitably journaled within the base frame I1. Keyed to the shaft It is alspur pinion 26 meshing with a spur gear 21 secured to a transverse shaft28 arranged parallel with the shaft I6. Splined to the shaft 2B is aslidable pinion 29 adapted to mesh with a spur gear 33 keyed to a sleeve3l herein formed integral with the spur gear 22. If desired, operatingmechanism may be provided for the clutch 23 and the sliding pinion 29 sothat when one is connected the other is released. As illustrated,secured to the shaft 25 is a chain sprocket 32 connected by an endlesschain connection 33 to a chain sprocket secured to the rear truck axle.The front and rear truck axles are connected together by a chain andsprocket connection 34. From the foregoing description it will beevident that when the jaw clutch 23 is shifted to connect the spur gear22 to the shaft I5 and the pinion 29 is out of mesh with the gear 3i]the truck wheels may be driven at a relatively high speed from the motorIll through worm gearing I4, l5, friction clutch I 8, shaft I5, spurgearing 22, 24 and the chain and sprocket connections 32, 33 and 34. Itwill also be evident that when the jaw clutch 23 is in its releasedposition and the spur pinion 29 is slid into meshing engagement with thegear 3S, the truck wheels may be driven at a relatively slow speedappropriate for cutting through the reduction gearing 2S, 21, 29 and 3.Upon reversal of the motor I the truck wheels may be driven to propelthe apparatus in a reverse direction at either a relatively high or arelatively low speed.

Now referring to the turntable mounting for the cutting mechanism, itwill be noted that supported for vertical adjustment relative to thetruck frame is a supporting frame in the form of an annulus or ring 35adapted to support the kerf cutting mechanism as will hereinafterappear. To this ring are attached a plurality of, herein three,depending brackets 33, the lower ends of which are shaped to engagerespectively with upstanding guide members 31 which are secured to thetruck frame and which serve to prevent lateral movement of the ring andattached parts relative to the truck frame. Sen cured to thesedependingbrackets 36 are screw nuts 38 (see Fig. 1) which are threadedly engagedwith vertical screws 39 supported at their upper ends by the upstandingguide members 31 and at their lower ends in step bearings 43 formed inbearing brackets 4i attached to the bottom of the truck frame. It willbe noted that the screw nuts are so connected to the feet of thedepending brackets as to permit a slight relative rocking movementbetween the parts. The three sets of screws and guide members constituteupright supports for the annular supporting frame or ring 35 and thelatter can be adjusted vertically in parallelism or angularly bysuitable rotation of the screws. Rotatably mounted upon each of thescrews 39 at its lower end is a chain sprocket 42 and these sprocketsare driven by an endless chain 43. Idler sprockets 44 and 45 serve toguide the chain 43 relative to the chain sprockets 42, the sprocket 45being adjustable to vary the tension of the chain 43. As shown in Fig.'7, the chain sprockets 42 have formed thereon clutch teeth 46 adaptedto engage with similar teeth on clutch members 41 splined to the lowerends of the screws. The screws extend downwardly through openings in thetop plate 4B of the truck frame. The clutch members 41 are each providedwith a groove 49 in engagement with an arm 5l] attached to a verticaloperating shaft 5I. The shafts 5I extend through the top plate 48 of thetruck and are each provided with a conveniently located handle 52 bywhich the movement of the clutch member 41 may be controlled. It willthus be seen that when all the clutches 41 are in a position to connectthe chain sprockets to the screws the latter may be simultaneouslyrotated to move the turntable li together with the cutting mechanismsupported thereby into different elevated positions relative to thetruck frame. It will also be noted that by releasing certain of theseclutches and connecting certain others the screws may be so rotated asto eifect tilting movement of the turntable about a horizontal axis. Themechanism for driving the screws 39 from the motor IQ herein comprises abevel pinion 53 (see 9) journaled on the shaft i6 and connectible to theshaft by the jaw clutch 23. This bevel pinion meshes with a bevel gear54 fixed to a vertical shaft 55 suitably journaled within the base frameI1. Keyed to the lower end of the shaft 55 is a chain sprocket 5G whichengages and drives the endless chain 43.

The turntable 4 supported by the annular supi A supporting frame 35 forreducing the friction porting frame or ring 35 is in the form of; acircular casting which constitutes the ymain base frame of the cuttingmechanism.` 'This casting forms the turntable rotatable aboutV thecenter of the ring and is guided for'rotative. movement in the ring by adepending annular flange 5l fitting thexinterior periphery of the ringand by aradial flange 58.0ver1yingthe top' surface of the ring. Ifdesired, suitable anti-friction rollers of any conventional designmaybeprovided between the turntable and the annular between theturntable and ring. `In the outer edge ofthe turntable casing is formeda series of notches 59, and cooperating with these notches isla slidablelocking plate mounted in a guideway formed Vwithin a bracket 6| securedtothe annular supporting frame 35. This locking member'` when in itsinnerposition is adaptedto engage` certain of the notches 59 to lock theturntable against rotation 'relativeto 'the annular supporting frame 35.Motor operated devices are employed for rotating the turntable relativeto the annular supporting frame and herein comprises a motor 55, hereinpreferably `of the reversible electric type, suspended beneath theturntable and having its armature shaft 66 horizontally disposed andlextending transversely across the turntable. Fixed tothe armature shaftis a bevel pinionl meshing with a bevel gear 5S `keyed to a verticalshaft 59 suitably journaled Within the turntable casting. Fixed tothe'shaft 59 isa spur gear 'Illand meshing as shown in Fig. `3 with spurgears 'Ii and '12. Rotatable with the spur gear 'II is a .worm 'i3meshing with av slow speed worm wheel T4. This wormwheel is` connectibleby a usual multiple disc clutch 15 having any suitable type of operatingmeans, to a transverse shaft 76 likewise suitably journaled within theturntable casting. Fixed to this shaft is a worm il meshing with a wormwheel 'I8 keyed to a vertical shaf-t` 'I9 suitably journaled Vwithin theturntable casting. Fixed to the lower end of this' shaft is a spurpinion Bilmeshing with internal gear teeth 8| herein cut in the innerwall of the annularsupporting frarnejt5` for the turntable. Rotatable`with the spur gear 'l2 is a Worm 83 meshing with a fastspeed worm wheel84 having its teeth oppositely inclined from' means of `vertical webs89.

` retaining and bearing sleeve Sii having an inthe teeth of the wormwheel 14 and operative upon application of a multiple disc clutch 85 toeffect drive of the shaft 'I6 at a fast speed in a directionopposite'from the slow speed drive. It will thus be seen that uponapplication of one or the other of the clutches l5, 85 the turntable maybe rota-ted relative to the annular supporting frame 35: at a relativelyhigh speed in one direction or atv a relatively low speed appropriatefor cutting in the opposite direction.`

Now referringto the cutting mechanism supported by the turntable it willbe observed that the turntable casting is provided with an integralbox-like extension or arm 86 rigidly braced with respect to theturntable by horizontal webs 8'! and overlying the ring 35 and theforward end of lthe truck. Formed integral with this extension or arm atits outer end is a circular flange 88 arrangedl in a substantiallyvertical position and rigidly braced with `respect tothe arm by As shownin Fig. 4 secured to this circular flange 88 *is` an annular wardlydirected flange 9|. Between `the flange 9i and a shoulder 92 formed onthe circular iiange 88 there is rotatably mountedl asl/eeve l93,

which herein forms a rotatable neck for the cutter head 5 as hereinafterdescribed. This sleeve- 93.is fastened to` a projecting neck member 94by;fwhich the cutter head 5 is supported. The member 94 alsol has hereinformed integral therewith a pair of parallel portions to which guidewayshereinafter described are secured, these members being connectedadjacent their lowerl ends by a transverse web 95 and being connected bywebs 91 to the neck memberyid, while curved webs-93 serve to connectthem with a generally circular. frame member or housing 99 which will be`more fully described. To thernembers 95 there are secured parallelguideways |00 exten-ding perpendicularly to the neck axis and in whichthere are slidable cross-head or guide members I 0|, Ythese beingsecured to members |52 which are fastened to a cutter supporting framem3., It will be observed that the frame I |l3 has secured thereto anannulus |04 which, .together with an annular shoulder IE5 upon theframei 53,.; 310- vides `an annular guideway'for a rotatable framemember |56. Secured to'this frame member M35 is a frame IU! whichcarries the cutter bar l.

The mechanism for effecting rotation of the cutter head Al5 about theneck axis herein comprises a beveled gear |98 fixed to the verticalshaft 59 (see Fig.` 4). Meshing with this` bevel gear is a Vbevel gear|09 xed to the rear end ofra horizontal longitudinally extendingtransmission shaft III) suitably journaled within the `turntablecasting. Keyed to this `shaft is a spur pinion I I I` meshing with aspur gear H2 xed to aparallel shaft 3 likewise suitably jour.- naledwithin the turntable casting. Formedintegral with this shaft I|3 is abevel pinion VIIl meshing with reverse bevels I I5, I I 5 (see alsoFigi` 6). These reverse bevelsr` `are alternatively connectiblefbymultiple disc clutches I I 'i and I I8 respectively of a usual designtoa transverse shaft i As shown horizontal |23' arranged the shaft lli).

Fixed to the forward end of the shaft 23 is a spur pinion Ile meshingwith an internal gear |25 herein formed integral with the sleeve 93. Itwill thus beseen that upon suitable application of the clutches I I l, II8 the cutter head 5 may beY rotated about the neck axis in onedirection to positionv the cutterbar 7 Yinto a plurality of intersectingplanes. The worm gears I2I, |22 have self -locking teeth and when theclutches I Il, ||8Vare released automatically lock the cutter head 6against rotation about its axis thereby maintaining the cutter bar inits different adjusted positions about the head axis.

The driving mechanism for the cutting mechanisrn, `and the mechanism-foradjusting the cutter bar 'I into parallel planes toward and from theneck axis will now be described. Referring to Fig. 4 it will be observedthat keyed to the forward end of the shaft |||l is a spur pinion |30meshing with a spur gear |3| keyed to a longitudinally extending shaft|32 alined with the neck axis and suitably journaled within the circulariange` 88 and the cutter head frame. As shown Secured to the shaft IIBis arworm u or the other f This bevel gear is connected in non-rotativerela.- tion to a sleeve-like nut element |35. Coaxial with the nutelement is a splined sleeve |36 which, at its upper end, is keyed to asleeve member |31. This sleeve member is alternatively connectible by asliding clutch device |38 to a rela.- tively stationary member |38secured to the frame 99 or to the nut member |35. Suitable clutchoperating mechanism including a pivoted shipper yoke |40 is secured toan operating shaft |4|. Also secured to this shaft externally of thecutter head frame is an operating lever |42 (see Fig. 1). Threadedlyengaging the nut |35 is a screw shaft |43 having splineways ||4 thereincooperating with splines |45 upon the member |36. This screw shaft |43has a collar |46 thereon engaging a suitable combined bearing andsupporting means |41 for the housing or frame |03 and the mechanismsupported thereby so that the screw shaft |43 is adapted to effectadjustment of the cutter bar supporting frame |01 along guideways |00toward and from the neck axis. It will thus be seen that when the clutchdevice |33 is moved into a position to connect the sleeve |36 to thestationary member |39, the'screw shaft |43,vdue to its splinedconnection with the sleeve |36, is held against rotation and that uponrotation of the nut member |35 the screw shaft is moved axially toeffect adjustment of the cutter bar 1 toward or from the neck axis,depending upon the direction of motor rotation. It will also be notedthat when the clutch device |33 is shifted into its opposite position,connecting the sleeve |36 to the bevel gear |34, the sleeve |36 andscrew shaft |43 may be rotated together at the same angular speed withno axial adjustment of the shaft, and at that time the screw shaft actsonly as a transmission shaft. J ournaled on the lower end of the screwshaft is a cutter chain drive sprocket |48 which engages and drives anendless cutter bit carrying cutter chain |59 mounted on the margin ofthe cutter bar 1. The screw shaft |43 drives the cutter chain and thecutter chain drive sprocket |48 is connectible to the shaft by means ofa sliding clutch device |50 having any suitable operating meansincluding a pivoted shipper yoke |5| connected through a crank |52 to anoperating shaft |53. Secured to this operating shaft externally of theframe |63 is an operating lever |54 (see Fig. 8)

Mechanism is also employed for effecting swinging movement of the cutterbar 1 relative to the frame |03 and herein comprises a spur gear |55(see Fig. 5) secured for rotation with the shaft |43 and meshing asshown in Fig. 8 with spur gears |56 and |51. Rotatable with the spurgear |56 is a worm |58 meshing with a slow speed worm wheel |59. Thisworm wheel is connectible by a usual multiple disc clutch |60 to atransverse shaft |6| having fixed thereto a worm |62 meshing with a wormwheel |63 suitably journaled within the frame |63. vThis worm wheel, asshown in Fig. 5, is keyed to a shaft |64 having secured thereto a spurpinion |65 meshing with an internal gear |56 formed on the annularsupporting member |06 for the cutter bar. Rotatable with the spur gear|51 is a worm |61 meshing with a fast speed worm wheel |68 having itsteeth inclined oppositely from the teeth of the worm wheel |59 andoperative upon application of a multiple disc clutch |69 to drive theshaft |6| at a fast speed in a direction oppo-Y site from the slow speeddrive described above. It will thus be seen that upon application of oneor the other of the clutches |60, |69 the cutter bar 1 may be swungabout a pivotal axis coincident with the axis/of the screw shaft |43 ata relatively high bar positioning speed in one direction or at arelatively slow speed appropriate for cutting in the opposite direction.The worm gearing is of the self-locking type and therefore, whendisconnected from the motor, automatically maintains the cutter bar inits different angular positions of adjustment.

Electrical energy may be conducted to the electrical controllingapparatus for the motors |0 and 65 through a usual flexible conductorcable |10 wound upon a cable reel |1| supported on the truck. This cablereel is driven by the motor I0 through the following connections: Asmentioned above, journaled on the shaft I6 is a sleeve 3| integral withthe spur gear 22 (see Fig. 9) and rotatable therewith at either a fastor a slow speed. Splined to this sleeve is a suitable jaw clutch |12having clutch teeth engageable with clutch teeth |13 formed upon adriving pulley |14 journaled on the sleeve 3|. This pulley |14 isconnected by a belt |15 to a pulley |16 secured to the cable reel. Itwill be evident that as the truck wheels are driven to propel theapparatus in either direction along the mine trackway, the cable reelmay be also rotated to wind in or pay out the conductor cable.

The preferred mode of operation of the improved mining apparatus willnow be described: The apparatus is propelled about the mine forwardlyalong the mine trackway at a relatively fast transport speed through thetruck driving gearing I4, l5, 22, 24 driven by the motor l0. When theapparatus is traveling about the mine the turntable 4, cutter head 6,and cutter bar 1 are disposed in their transport position with thecutter bar above the level of the trackway as shown in Fig. 2. When theworking face is reached the fast truck wheel drive is disconnected fromthe motor l0 by releasing the friction clutch I8 and the jaw clutch 23.If it isv desired to make a swinging cut at or near the level of themine bottom in front of the end of the trackway, the operator firstapplies the friction clutch |69 controlling the fast speed bar swingingmechanism and the cutter bar 1 is swung about its pivot relative to thecutter head at a relatively fast bar positioning speed from the positionshown in Fig. 1 laterally to a position adjacent the right hand rib ofthe entry, the friction clutch |69 thereafter being released. Theoperator then shifts the clutch device |33 to a position to connect thesleeve |36 to the relatively stationary member |39 and upon starting ofthe motor 65 the cutter bar may be moved rectilinearly along theguideways |30 downwardly away from the head axis until it occupies aposition at or near the level of the mine bottom as shown in Fig. 1l;the adjusting mechanism being driven from the motor 65 through bevelgearing 51, 66, 98, |09, shaft ||0, spul` gearing |39, |3l, shaft |32and bevel gearing |33, |34. The clutch device |33 is then shifteddownwardly to disconnect the sleeve |36 from the relatively stationarymember |39 and to connect the sleeve to the gear |35 and the clutchdevice |50 moved to a position to connect the cutter chain drivesprocket |43 to the shaft |43, and as a result, the cutter chain |49 israpidly circulated about the margin of the cutter bar 1, the screw shaft|43 then acting only as a transmission shaft with no axial adjustment.The friction clutch |60 controlling the slow speed bar swingingmechanism is then applied and the cutter bar 1 is swung transversely inits plane flo across the front end of the trackway to make an arcuatecutbeneath thecoal. When the cutter bar reaches a position adjacent theleft hand rib, the friction clutch |53 is released. After the completionof the swinging out, the cutter chain M9 is disconnected from its drive,the clutch device |38 shifted to connect the sleeve |36 to therelatively stationary member |39 and upon reversal of the motor 65 thecutter bar is moved upwardly rectilinearly along the guideways towardthe neck axis tothe position shown in Fig. 2, the clutch device |38thereafter being movedto its neutral position. The motor lil isthenreversed, the clutches I8 and 23 connected and the apparatus is thenpropelled rearwardly at` a high speed along the mine trackway tothe mineentry.

If it is desired to cut a horizontal kerf` at or near the level of themine bottomoutside of and below thelevel of the mine trackway, theoperator slides the locking member 60 for the turntable into itsreleased position, starts the motor 65 in the proper direction, and uponapplication of the clutch 85, the turntable 4, vtogether with thecutting mechanism supported thereby, is swung horizontally from theposition shown in Fig. 1 to the full line position indicated at A inFig.12. During horizontal swinging movement of .the turntable4 relative tothe truck `the cutter bar l may be swung simultaneously about its pivotrelative to the cutter `head in theopposite direction under the controlof the slow speedbar swingY clutch |53 until the parts assume the posi#tion shown. When the parts are thus disposed with the bar pivot lyingoutside of the mine trackway, the operator releases the friction`clutches-35 and |33 and then locks the turntable by sliding the lockingmember 60 into one of `the notches 59 on the turntable. The clutchdevice|38 isthen shifted to a position to connect the sleeve |33 to therelatively stationary member I 39 and upon actuation of the drivinggearing |33, |34, the` cutter' bar is moved rectilinearlydownwardlyalong the guideways lil@ Aaway from the head axis until it loccupies aposition at ornear the level of the mine bottom,` the cutter barbeingpositioned relative to the mine bottom as shown `in Fig. ll at thattime.' The` clutch device |33 is then moved to connect the sleeve |36`and the nut |35v andtheclutch device lconnected, thereby effectingcirculation of the cutter chain about the margin of the cutter bar l.The motor I0 is then started in the proper direction and the apparatuspropelled forward bodily along the mine trackway at a relatively-slowcutting speed, sump-v ing thecutter bar beneath the coal from position Ashown in Fig. i3 toposition B indicated'in dot' ted lines in thatfigure. The friction clutch I8 is then released and the brakeZl set. Theoperator then releases the locking member 3D for the turntable and uponapplication of frictionclutch 'I5 the turntable ll, together with thecutting mechanism supported thereby, is swung horizontally at a lowcutting speed to effect horizontal swinging movement of the cutter barVin its plane.

During the initial swinging movement of the turntable the cutter bar 'iis swung about its pivot in a reverse direction under the control of thefriction clutch |69 until the parts Vassume a straight line positionwherein Vthe cutter bar 'l extends parallel to a line including the barpivot and the turntable axis as indicated at C in Fig. 12. After thecutterbar has reached the left hand rib as indicated at D in Fig. 12 andthe swinging cut been completed, the cutter bar l is again swung aboutitspivot rearwardly under the con-- 5 trolof thefriction clutch '169.while 'rotation of the Aturntable 4 is continued, the turntable andcutter bar swinging simultaneously in opposite directions at that timeuntil they assume the position indicated at E inFig; .12. The turntable4.is then locked against rotation and the brake 27|ireleased,andY uponreversal of the motor I0 andapplication of the friction 'clutch I8 theapparatus isV propelled bodily rearwardly'along the mine trackway at aslow cutting speed, moving the cutter bar from the position E in Fig. 12to position F in that gure. As a result, it will be evident that-aVhorizontalfplane kerf may be out at o r near-'the level of the minebottom in accordance with the arcwall method of cutting. After thecompletion" of the cut Abeneath the coal the parts areagainfreturned totheir transport position shown in Aliigj2. v *W f `A4 horizontal kerfmay be cut` ator near the level of Ythe mine roof by connecting theelevating screws 39 to the motor it, thereby elevating the turntable4,`together` with the cutting mechanismsupported'thereby bodily relativeto the truclilto theposition showninFig. 13. The cutter head 6 4is thenrotated about the neck axis to a position wherein the cutter -bar loccupies its topfcutting position. Thecutter bar-is then adjustedvertically 'rectilinearly along the guideways lil away from the headaxis until the same assumes a position as ir'idicatedin` Fig.V 13. Thecutter bar is then surnped in,- swung transversely in'V its plane andwithdrawn 4from the coal in accordance with-the usual arcwall method ofcutting.` It -will"herein `be notedthat during any of thehorizontalcutting operations described above, for instancewhen it is desired tocut on a rolling bottom, the `cutting mechanism may be tilted about atransverse axis simply by disconnecting certain of theelevating screwsV39 from themotor while others are rotatedrvthereby causing theturntable to be tilted relative to the horizontal. For instance, if itis desired to tilt the tip end of the cutter bar downwardly, this may beaccom` plishedly disconnectingjthe clutches for the irontelevatingscrews 39 while the rear elevating screw is connected to themotor lil, thereby causing the rear edge of the turntable to beelevated. Conversely, if it isdesired to tilt the tip end of the cutterbar upwardly, the rear elevating screw may be disconnected from themotor while the front elevating screws arerotated, thereby causing theforward edgeof the turntable to be tilted upwardly; It willY also benoted that upon certain adjustment of the elevating screws, theturntable may be tilted into diierent angular positions abouttransverse4 or longitudinal axes or any intermediate Vaxes desired,therebyv enabling the cutter bar to be positioned to suit diierentmining conditions;

A shear for vertical cut may be inserted in the coal face simply byapplying *one or the other Yoi? the reverse frictions H'LI i3`controlling the reverse bevels |I5,"||'` respectively thereby enablingthe cutter head 5to be rotated about the neck axis by the motor 65through the gearing El, 69,108, |09, shaft lill, gearing IH, H2, thebevel pinion H4, one or the other ofthe reverse bevels H5,` H6, wormVgearing |2|, |22, shaft |23, and pinion |24 meshing with the internalgear |25 secured to the cutter head to bring the cutter bar 'l into aposition to `svv'ing vertically asshown in Fig. lll. During the shearingoperation the cutterbar Vis rst sumped in, then swung downwardly in itsplane and thereafter withdrawn" from the coal ina manner similar to thatdescribed above in regard to horizontal cutting in accordance with thearcwall method. It will further be noted that the cutter bar may bemoved bodily toward and from the neck axis into diierent parallel planesin any of its positions about the neck axis, thereby enabling theapparatus to cut parallel horizontal kerfs and parallel vertical kerfsand kerts in a plurality of intersecting planes.

As a result of this invention, it will be noted that an improved coalmining apparatus is provid-ed which is adapted to cut horizontally at ornear the level of the mine bottom outside the mine trackw-ay and belowthe track rails and also to make shear or vertical cuts, therebyfacilitating the shooting of the coal from the solid and increasing thequantity of lump coal obtainable. It will further be noted that undercertain conditions, the cutter bar may be adjusted to-cut at or near thelevel of the mine roof; or if desired in parallel planes between themine roof and mine bottom. It will still further be noted that animproved universal coal cutter is provided having improved adjustablekerf cutting mechanism whereby the cutter bar may be positioned to cutin parallel planes either vertically or horizontally within acomparatively wide cutting range. It Will further be noted thatantimproved coal cutter is provided wherein the adjusting mechanism forthe kerf cutting mechanism is extremely flexible, it being possible tooperate the apparatus as a mounted bottom cutter, top cutter, shearcutter and slabbing machine, thereby enabling the apparatus toaccommodate itself to practically every mining condition encounteredwherever the use of mounted track cutters is possible. These and otheruses and advantages of the improved mining apparatus will be clearlyapparent to those skilled in the art.

While there is in this application specifically described one form whichthe invention may assume in practice, it Will be understood that thisform of the same is shown for purposes of illustration and that theinvention may be modified and embodied in various other forms Withoutdeparting from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. In a mining apparatus, a wheeled truck adapted to run along atrackway, a horizontal turntable mounted thereon for rotation 'about avertical axis, an annular supporting frame for said turntable, a frameon said turntable having an arm overlying said annular frame andprojecting outwardly beyond said annular frame and a drop supportmounted on said projecting arm and having a depending neck extendingdownwardly below the annular frame, kerl? `cutting mechanism mounted onsaid turntable including a cutter carrying head mounted on saiddepending neck for rotation about a horizontal axis disposed below thetop surface of said annular frame and extending radially from saidturntable axis and a cutter bar pivotally mounted on said cutter head, amotor carried by said turntable., mechanism driven by said motor fordriving said cutting mechanism, mechanism driven by said motor forrotating said turntable relative to said annun lar supporting frame,mechanism driven by said motor for rotating said cutter head about itsaxis relative to said turntable, mechanism driven by said motor forswinging said cutter bar about its pivot relative to said cutter headWhile said turntable remains stationary. and motor operated de vices foradjusting said annular supporting frame vertically relative to saidtruck.

2. In a mining apparatus, a wheeled truck adapted to run along atrackway, horizontal turntable mounted on said truck for adjustmentvertically in parallelism relative thereto and for tilting movementrelative to said truck about a horizontal axis, an annular supportingframe for said turntable, kerf cutting mechanism mounted on saidturntable including a cutter bar swingable with said turntable to cut ahorizontal kerf, a motor carried by said turntable, a directintermeshing gear drive between said motor and said annular supportingframe for rotating said turntable about its axis to effect swingingmovement of said cutter bar and including an internal gear on the innerperiphery of said annular frame and a gear on said turntable meshingwith said 1nternal gear, mechanism driven by said motor for driving saidcutting mechanism, and motor op-l erated devices on said truck foradjusting said annular supporting frame vertically relative to saidtruck and for tilting said frame about a horizontal axis.

3. In a mining apparatus, a wheeled truck adapted to run along atrackway, a horizontal turntable thereon rotatable relative theretoabout a vertical axis, motor operated devices for adjust-f ing saidturntable bodily into different elevated positions'relative to saidtruck and for tilting said turntable about a transverse horizontal axisrelative to said truck, kerf cutting mechanism carried by saidturntable, a motor carried by said turntable, and mechanism including adirect intermeshing gear drive connected to said turntable and driven bysaid motor for rotating said turntable about its axis relative to saidtruck, said rotating mechanism including a relatively stationaryinternal gear arranged adjacent the outer periphery of said turntableand relative to which said turntable is rotatable and a gear on theturntable meshing with said internal gear.

4. In a mining apparatus, a wheeled truck adapted to run along atraclrway, a horizontal turntable thereon rotatable relative theretoabout a vertical axis, motor operated devices for adjusting saidturntable bodily into dii'erent elevated positions relative to saidtruckl and for tilting said turntable about a transverse horizontal axisrelative to said truck, kerf cutting mecha nism carried by saidturntable, a motor carried by said turntable, and mechanism including adirect intermeshing gear drive connected to said turntable and driven bysaid motor for rotating said turntable about its axis relative to saidtruck, said intermeshing gear drive including a relatively stationaryinternal gear arranged adjacent the outer periphery of said turntableand relative to which said turntable is rotatable, and a gear on theturntable meshing with said inN ternal gear and a manually controllablereversing device operable at will to eiect rotation of said turntablegear to effect rotation of said turntable in either of oppositedirections without reversing said motor.

5. In a mining apparatus, a wheeled truck adapted to run along atrackway, a support mounted thereon for vertical adjustment relativethereto, a horizontal turntable carried by said support and rotatablerelative iereto about a vertical axis, said turntable being tiltablerelative to said truck into diderent angular positions relative to thehorizontal, a drop frame supported on said turntable and extendingdownwardly below the top ofthe turntable and support in advance of saidtruck, a support mounted on said drop frame for rotation about alongitudinal axis dis?. posed below the top surface of said turntablesupport, aframe mounted on said second support for adjustment toward andfrom the axis of said second support, and a cutter bar carried by saidadjustable frame andiswingable relative thereto..

6. In a mining apparatus, kerf'cutting mechanism including a swingableVkerf cutter, a motor mounted to swing with said kerf cutter, and meansdriven by said motor for actuating the cuttingelements `of the kerfcutter including a vertical driving shaftgand mechanism `for Vswingingsaid kerf cutter at a high positioning speed in one direction and at arelatively low cutting speed in the opposite direction including a fastspeed gear train and a slow speed gear train, each gear train includingintermeshing transmission gears and means for driving said gear trainsfrom said driving shaft.` i i 7. In a-mining apparatus, a Y,wheeledtruck adapted-to runalong a mine trackwaypa horizontal turntable on saidtruck, devices for adjusting said turntable into different elevated`posii tions relative to said truck, an arm fixed to the turntable and.projecting horizontally therefrom, a cutter head mounted on the outerextremity of said arm for rotation about a horizontal axis disposedbelow the top surface of the turntable 1 and-extending radially from theaxial line of the table and supporting `the latter, an arm xed tosaid'tu'rntable and projecting horizontally therefrom beyond the outeredge of said annular supporting frameand having a `depending portion at`its outer extremity extending `downwardly below the bottom of saidannular supporting frame, a support mounted on said depending portion ofsaid arm for rotation about an axis extending radially from theaxialline of the turntable and having spending guideways,` a frame mounted onsaid support for adjustment along said guideways toward and from theaxial line of `said support, a kerf cutter pivotally mounted onsaidadjustable frame for swinging movement relative thereto about an :axisperpendicular to the axial kline of said supportp` means operable torotate said support about its axis, means operable` to adjust said frametoward and from the axis of said support, and means operable to saidkerf cutter about its pivot.

9. In a mining apparatus, a Wheeled truck adapted `to run alongatrackway, a horizontal turntable thereon, motor operated devices forbodily adjusting said turntable into different `elevated positionsrelative to said truck and for tilting said turntable about a transverseaxis relative to said truck, a drop support on said l, turntableincluding a horizontal frame portion projecting outwardly from saidturntable in ad- Vance of the forward edge of the turntable and adepending neck frame on the outer extremity ortis-aid horizontal frame,portion andv extending downwardly in advance of the forward end ofthetruclnkerf cutting mechanism mounted on said turntableincluding a cutterhead mounted on said depending neck frame for rotation about alongitudinal axis disposed below the` top surface of'said turntable anda cutter bar pivotally mounted on said head for Aswingingmovement'relative thereto, and motor operated devices for rotating saidcutter head aboutits axis relative to said turntable and for swingingsaid cutter bar about its pivot relative to saidcutter "Lhead while saidturntable remains stationary, the mechanism for rotating said cutterhead about its axis including gearing including aV gear element fixed tosaid cutter head and rotatable therewith on said longitudinal axis and agear element meshing with said first mentioned gear element and rotatingon an axis fixed as tomovement relative to said longitudinal axis.

10. In a machine of the class described, a

for said support and on which said support is rotatablyfmounted, saidframe being tiltable with said support, asubstantially horizontallyextending cutter bar,` mounting means for. the cutter bar in `connectionwith the support whereby the barV is movable relative to the supportabout a plurality of i reotangularly related axes of which one issubstantiallyon the horizontal and disposed outside and below the topsurface of said supportsupporting frame, means operable to tiltthe'support, means operable to swing the support, and means operable tomove the cutter bar about said plurality of axes including a pair ofgear elements one rotatable on each of said axes and each rotatingduring movement of the bar about its respective axis at the same angularrate as the cutter bar.

1l. In a machine ofthe class described, a truck adapted to travel over amine'track, a turntable,

means supporting turntable on said truck for vmutation relative to thetruck ona normally vertical, and also for universal `tilting movementrelative to the truck, an arm xed to the turntable and projectinghorizontally therefrom and a depending neck carried by said arm andextending downwardly below the top of said turntable supporting means inadvance of the latter and saidtruck,` akerf cutter 4supported by saiddepending' neck for movement relative thereto about a plurality ofrectangularly related `axes of whichfone is substantially on thehorizontal, the horizontal axis beingdisposed below the topsurfaceofpsaidturntable supporting means, means operable to tilt theturntable, means operable to swing the turntable, and means operable to'move turntable and projecting horizontally therefromV a rotatable shaftextending longitudinally of said arm ,in a horizontal plane below thetop ofthe turntable, a hea-:l mounted on said arm' and rotatable aboutan axis in.. the same straight line its with the axis of said shaft, ashaft iournaled in said head at right angles to the first mentionedshaft, a cutter bar supported by said head for swinging movement aboutthe second-named shaft, a cutter chain drive sprocket on saidsecond-named shaft to be driven thereby, a motor on said turntable,means driven by the motor to swing the turntable, to drive the sprocketshaft, to rotate said head relative to said arm, and to swing the cutterbar relative to the head, and means operable to tilt the turntable.

13. In a mining apparatus, a wheeled truck adapted to run along atrackway, a horizontal turntable mounted on said truck for rotationabout a vertical axis, an annular supporting frame for said turntable, aframe on said turntable having an arm overlying said annular frame andprojecting outwardly beyond said annular frame and a drop supportmounted on the outer extremity of said projecting arm and having adepending portion extending downwardly below the annular frame, kerfcutting mechanism carried by said turntable including a cutter barpivotally supported on the depending portion of said drop support toswing in horizontal planes about an axis parallel to said turntableaxis, said turntable, drop support and cutting mechanism beingadjustable relative to said truck to position said cutter bar to cut ahorizontal kerf at the level of the mine bottom outside and below thelevel of the trackway and in advance of the trackway, a motor carried bysaid turntable, mechanism driven by said motor for rotating saidturntable relative to said annular supporting frame, mechanism driven bysaid motor for swinging said cutter bar about its pivot while saidturntable remains stationary, and motor operated devices for adjustingsaid annular supporting frame vertically relative to' said trunk.

14. In a mining apparatus, a wheeled truck adapted to run along atrackway, a horizontal turntable mounted thereon for rotation about avertical axis, an annular supporting frame for said turntable, a frameon said turntable having an arm overlying said annular frame andprojecting outwardly beyond said annular frame and a drop supportmounted on said projecting arm and having at its outer extremity adepending neck portion extending downwardly below the annular frame,kerf cutting mechanism mounted on said turntable including a cuttercarrying head mounted on the depending neck portion of said drop supportfor rotation about a horizontal axis disposed below the top surface ofsaid annular frame and extending radially from said turntable axis and acutter bar pivotally mounted on said cutter head, said turntable, dropsupport and cutter head being adjustable relative to the truck toposition said cutter bar to cut a horizontal kerf at the level of themine bottom outside and below the level of the trackway and in advanceof the trackway, a motor carried by said turntable, mechanism driven bysaid motor for driving said cutting mechanism, mechanism driven by saidmotor for rotating said turntable relative to said annular supportingframe, mechanisin driven by said motor for rotating said cutter headabout its axis relative to said turntable, mechanism driven by saidmotor for swinging said cutter bar about its pivot relative to saidcutter head while said turntable remains stationary, and motor operateddevices for adjusting said annular supporting frame vertically relativeto said truck.

15. In a machine of the class described, a movable base, a supportmounted on said base for swinging movement relative thereto about anormally vertical axis and also for universal tilting movement relativethereto, a substantially horizontally extending cutter bar, mountingmeans for the cutter bar in connection with the support whereby the baris movable relative to the support about a plurality of rectangularlyrelated axes of which one is substantially on the horizontal, thehorizontal axis being disposed below the top surface of said rotatableand tiltable support, means operable to tilt the support, means operableto swing the support, and means operable to move the cutter bar aboutsaid plurality of axes.

16. 1n a machine of the class described, a truck adapted to travel overa mine track, a turntable, means supporting said turntable on said truckfor rotation relative to the truck on a normally vertical axis and alsofor universal tilting movement relative to the truck, an arm fixed tothe turntable and projecting horizontally therefrom and having adepending neck, a rotatable shaft extending longitudinally of said arm,a shaft parallel with said shaft and disposed below the top surface ofthe turntable, a head mounted on said depending neck and rotatable abouta line including the axis of said parallel shaft as an axis, a thirdshaft journaled in said head at right angles to the first mentionedshafts, a cutter bar supported by said head for swinging movement aboutthe third named shaft, a cutter chain drive sprocket on said third namedshaft to be driven thereby, a motor on said turntable, means driven bysaid motor to swing the turntable, to drive the sprocket shaft, torotate said head relative to said arm and to swing the cutter barrelative to the head, and means operable to tilt the turntable.

17. Ina mining apparatus, a wheeled truck adapted to run along a minetrackway, a horizontal turntable on said truck, an arm secured to theturntable and projecting outwardly beyond the forward edge of theturntable and in advance of said truck, said arm having at its outeroverhanging extremity a depending neck frame extending downwardly belowthe bottom surface of the turntable, a cutter head rotatably mounted onsaid depending neck frame to rotate about a" horizontal axis extendingradially from the turntable axis and disposed below the top surface ofthe turntable, a kerf cutter pivotally mounted on said cutter head toswing about an axis at right angles to the head axis, and motor operateddevices for actuating the kerf cutter including a horizontal shaftjournaled on said arm above the top surface of the turntable, a parallelshaft journaled in said depending neck frame and arranged with its axiscoincident with the cutter head axis, intermeshing gears on said shafts,a shaft arranged with its axis coincident with the kerf` cutter pivotaxis and journaled in said cutter head, and intermeshing bevel gearingon said two last named shafts.

18. In a mining apparatus, a wheeled truck adapted to run along a minetrackway, a horizontal turntable on said truck, an arm secured to theturntable and projecting outwardly beyond the forward edge of theturntable and in advance of said truck, said arm having at its outeroverhanging extremity a depending neck portion extending downwardlybelow the bottom surface of the turntable, a cutter head rotatablymounted on said depending neck portion to rotate about a horizontal axisextending radially from the turntable axis and disposed below the topsurface of the turntable, Va kerf cutter pivotally mounted on saidcutter head to swing about an axis at right angles to the head axis, andmotor operated devices for actuating the kerf cutter including avertical shaft journaled on said'turntable, a horizontal shaft journaledon said arm above the top surface of the turntable, intermeshing bevelgearing on said shafts, a parallel shaft journaled on said dependingneck frame and arranged with its axis coincident with the cutter headaxis, intermeshing gears on said two last named shafts, a shaft arrangedwith its axis coincident'with the kerf cutter pivot axis and journaledinl said cutter head, andintermeshing bevel gearing on saidtwo lastnamed shafts.

19. In a mining apparatus, a wheeled truck adapted to run along a minetrackway, a horizontal turntable on said truck, an arm secured to theturntable and projecting outwardly beyond the forward edgeiof theturntable and in advance of said truck, said arm having at its outeroverhanging extremity a depending neck frame extending downwardly belowthe bottom surface of theturntable, a cutter head rotatably mounted onsaid depending neck frame to rotate about a yhoriaontal axis extendingradially from the turnon said cutter head to swing about an axis at Yright angles to the head axis, and motor operated devices for actuatingthe kerf cutter including a horizontal motor shaft on the turntable, abevel pinion on said motor shaft, a vertical shaft journaled on saidturntable, a bevel gear xed to said vertical shaft and driven by saidbevel pinion, a horizontal shaft journaled on sai-d arm above the topsurface cf the turntable, intermeshing bevel gears on said two lastnamed shafts, a parallel shaft journaled on ysaid depending neck frameand arranged with its axis lcoincident with the cutter head axis,intermeshing gears on said two last named shafts, a shaft arranged withits axis coincident with the kerf cutter pivot axis'and journaled insaid cutter head, and intermeshing bevel gearing on said two last namedshafts.

CHARLES F. OSGOOD.

